This book pertains to the broader discipline of micropaleontology, presenting detailed taxonomic descriptions of deep water benthic foraminifera from the three Deep Sea Drilling Project (DSDP) sites. Brief notes on microhabitats of benthic foraminifera, biostratigraphy and their importance in understanding history of oxygen minimum zone and deep--sea circulation in the Indian Ocean during the Neogene have also been provided. The purpose of this volume is to cater to the greater needs of graduate students, researchers and professionals working on Foraminifera – their systematic descriptions and use in paleoceanography from the marine realms with special interests on the Indian Ocean microfauna. This book is expected to serve as both a reference and textbook to students and experts. This book will reduce the ambiguities in taxonomic status of deep-water benthic foraminifera to a great extent since there is disagreement about the application of names to certain benthic foraminiferal taxa. For students of geology, this book will be relevant to the study of subjects of micropaleontology, paleoceanography and paleoclimatology, and marine geosciences. It will be useful for both teaching and research to graduate, doctoral and post-doctoral students.